substitutability

From substitute +‎ -ability.

substitutability (countable and uncountable, plural substitutabilities)

1. The quality of being substitutable; the capacity to be substituted.
   • 1988, Joseph Tainter, “Summary and Implications”, in The Collapse of Complex Societies, Cambridge: Cambridge University Press, →ISBN, page 212:

     One problem with the principle of infinite substitutability is that it does not apply, in any simple fashion, to investments in organizational complexity.